
The Porsche Cayenne Coupe is a sleeker Merc GLE Coupe, Audi Q8 rival

Need to sell more of an SUV?
Slice a few inches off the roofline, add the word "Coupe" behind the name and Bob's your uncle.
That's the formula BMW tested to great success with its X6 - which started the trend of coupe-fying SUVs - and Porsche has st...